package com.hh.demo.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alipay.easysdk.factory.Factory;
import com.alipay.easysdk.kernel.Config;
import com.alipay.easysdk.kernel.util.ResponseChecker;
import com.alipay.easysdk.payment.common.models.AlipayTradeCloseResponse;
import com.alipay.easysdk.payment.common.models.AlipayTradeRefundResponse;
import com.alipay.easysdk.payment.page.Client;
import com.alipay.easysdk.payment.page.models.AlipayTradePagePayResponse;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.hh.demo.domain.AlipayInfo;
import com.hh.demo.domain.PayOrder;
import com.hh.demo.dto.AlipayNotifyDto;
import com.hh.demo.dto.PayApplyDto;
import com.hh.demo.dto.PayNotifyDto;
import com.hh.demo.exception.GlobalException;
import com.hh.demo.mapper.PayOrderMapper;
import com.hh.demo.service.IAlipayInfoService;
import com.hh.demo.service.IPayOrderService;
import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import com.hh.demo.util.AssertUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.client.producer.LocalTransactionState;
import org.apache.rocketmq.client.producer.SendStatus;
import org.apache.rocketmq.client.producer.TransactionSendResult;
import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.springframework.messaging.Message;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import java.util.Date;
import java.util.Map;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author goeun
 * @since 2022-08-01
 */
@Service
@Slf4j
public class PayOrderServiceImpl extends ServiceImpl<PayOrderMapper, PayOrder> implements IPayOrderService {
    @Resource
    private IAlipayInfoService alipayInfoService;
    @Resource
    private RocketMQTemplate rocketMQTemplate;
    @Override
    public String apply(PayApplyDto dto) {
        PayOrder payOrder = selectOne(new EntityWrapper<PayOrder>().eq("order_no",dto.getOrderNo()));
        AssertUtil.isNotNull(payOrder,"支付单不存在！");
        boolean flag = payOrder.getPayStatus() == PayOrder.STATE_WAIT_PAY;
        AssertUtil.isTrue(flag,"支付单状态异常，发起支付失败！");
        if(payOrder.getPayType() == 1){//支付宝支付
            return alipay(payOrder,dto);
        }
        return null;
    }

    /**
     * 调用支付宝支付，返回Form表单
     * @return
     * @throws Exception
     */
    public String alipay(PayOrder payOrder,PayApplyDto dto){
        AlipayInfo info = alipayInfoService.selectOne(null);
        // 1. 设置参数（全局只需设置一次）
        Factory.setOptions(getOptions(info));
        try {
            // 2. 网页端支付
            Client page = Factory.Payment.Page();
            //封装支付相关参数，发起支付
            AlipayTradePagePayResponse response = page.pay(
                    payOrder.getSubject(),
                    payOrder.getOrderNo(),
                    payOrder.getAmount().toString(),
                    StringUtils.isEmpty(dto.getCallUrl())?info.getReturnUrl():dto.getCallUrl()//同步回调地址
            );
            // 3. 处理响应或异常
            if (ResponseChecker.success(response)) {
                System.out.println("调用成功");
                System.out.println("返回的表单=====》"+response.getBody());
                return response.getBody();//Form表单
            } else {
                System.err.println("调用失败，原因：");
                throw new GlobalException("支付调用失败！！！");
            }
        } catch (Exception e) {
            System.err.println("调用遭遇异常，原因：" + e.getMessage());
            throw new RuntimeException(e.getMessage(), e);
        }
    }

    public Config getOptions(AlipayInfo info) {
        Config config = new Config();
        config.protocol = info.getProtocol();
        config.gatewayHost = info.getGatewayHost();//沙箱API地址
        config.signType = info.getSignType();
        config.appId = info.getAppId();
        // 为避免私钥随源码泄露，推荐从文件中读取私钥字符串而不是写入源码中
        config.merchantPrivateKey = info.getMerchantPrivateKey();
        //注：如果采用非证书模式，则无需赋值上面的三个证书路径，改为赋值如下的支付宝公钥字符串即可
        config.alipayPublicKey = info.getAlipayPublicKey();
        //可设置异步通知接收服务地址（可选）
        config.notifyUrl = info.getNotifyUrl();
        //可设置AES密钥，调用AES加解密相关接口时需要（可选）
        config.encryptKey = "";
        return config;
    }

    /**
     * 处理支付成功之后的异步回调逻辑
     * @param dto
     * @return
     */
    @Override
    public String notify(AlipayNotifyDto dto) throws Exception{
        // 我们收到了支付宝的异步通知，我们直接开始搞事？？
        // 1.需要校验身份
        String jsonString = JSON.toJSONString(dto);
        Map<String,String> dtoMap = JSONObject.parseObject(jsonString, Map.class);
        //... ... 接收到的所有参数放入一个Map中
        Boolean isValid = Factory.Payment.Common().verifyNotify(dtoMap);
        if(!isValid){
            return "Fail";// 有可能信息被篡改，需要支付宝重新通知我
        }
        // 2.校验是否是我们的订单
        PayOrder payOrder = selectOne(new EntityWrapper<PayOrder>().eq("order_no",dto.getOut_trade_no()));
        if(payOrder== null){
            return "Fail";
        }
        if(payOrder.getPayStatus() == PayOrder.STATE_CANCEL){//如果支付单已经被取消，但是支付宝支付成功的消息回来了
            try {
                log.info("调用支付宝退款！！");
                //调用退款
                AlipayTradeRefundResponse refund = Factory.Payment.Common()
                        .refund(payOrder.getOrderNo(), payOrder.getAmount().toString());
            } catch (Exception e) {
                e.printStackTrace();
            }
            return "success";
        }


        if(payOrder.getPayStatus() != PayOrder.STATE_WAIT_PAY){
            return "Fail";
        }

        String trade_status = dto.getTrade_status();
        if(!trade_status.equals(AlipayNotifyDto.TRADE_SUCCESS)){
            return "Fail";
        }

        //处理支付成功之后的业务逻辑=============================
        //1.修改支付单状态
        payOrder.setPayStatus(PayOrder.STATE_PAY_SUCCESS);
        payOrder.setUpdateTime(new Date());
        //updateById(payOrder); 不能在这里该，应该交给事务监听器，在事务监听器中执行本地事务
        //@TODO 保存支付流水 。。。
        //=============================================
        // 发布事务消息  消息体需要字段： 订单号   购买人   课程id
        PayNotifyDto payNotifyDto = new PayNotifyDto(
                payOrder.getOrderNo(),
                payOrder.getExtParams()
        );

        log.info("发送支付成功通知事务消息");
        //构建消息体
        Message<String> message = MessageBuilder.withPayload(JSON.toJSONString(payNotifyDto)).build();
        TransactionSendResult transactionSendResult = rocketMQTemplate.sendMessageInTransaction(
                "service-pay-tx-group",//要和监听器上注解申明的名字一致
                "pay-notify-topic:pay-notify-tag",
                message,  //消息体
                payOrder   //额外参数
        );
        log.info("发送完支付异步通知事务消息--检查事务消息状态");
        LocalTransactionState localTransactionState = transactionSendResult.getLocalTransactionState();
        SendStatus sendStatus = transactionSendResult.getSendStatus();
        if(localTransactionState != LocalTransactionState.COMMIT_MESSAGE || sendStatus != SendStatus.SEND_OK ){
            log.info("校验发送事务消息状态异常");
            throw new GlobalException("处理支付成功结果失败！！");
        }

        //2.修改订单状态
        //3.添加用户的课程购买记录
        return "success";
    }

    /**
     * 支付超时
     *   1.取消支付单
     *   2.调用支付宝，关闭支付
     *     。在登录页面，是可以关闭交易的
     *     。如果到了支付页面，输入了支付密码，点击支付之后，那么关闭关闭不了
     *        --- 降级方案，在支付宝的异步通知中：走退款逻辑---
     * @param orderNo
     */
    @Override
    public void cancelOrder(String orderNo) {
        PayOrder payOrder = selectOne(new EntityWrapper<PayOrder>().eq("order_no",orderNo));
        //取消支付单
        if(payOrder.getPayStatus().intValue() == PayOrder.STATE_WAIT_PAY){
            payOrder.setPayStatus(PayOrder.STATE_CANCEL);
            updateById(payOrder);
        }
        //调用支付宝，关闭支付
        try {
            AlipayTradeCloseResponse close = Factory.Payment.Common().close(orderNo);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
